08
Jun
Moran Towing Corp. keeps cranking out the articulated tug-barge (ATB) units, but the latest one is slightly different than its predecessors, all of which were set up to haul oil barges. The new ATB tug Mary Ann Moran pushes the 531-foot dry-bulk barge Virginia enroute to San Juan with a cargo of grain. The 121-foot, 5,300-hp tug was completed recently…